Belt-shifter for embossing-presses.



Patented Dec. 24, 190|.

M. L. msToL.

BELT SHIFTEB FDR EMBSSING PRESSES.

(Application 'led Mar. 14. 1901.)

2 shunts-Sheet I.

(No Model.) I

@wirt/mosca MM in No. 689,382. v Patented Dec. 24, |901. M. L. BRISTUL.

BELT SHIFTEB FDR EMBOSSING lPRESSES.

(Application led man 14, 1901.)

2 Sheets-Sheet 2.

(No Model.)

TH: Nonms PETERS ca, wom-uma., wAsmNGTnN. D. c.

ENCE.

MORTIMER L. BRISTOL, OF HARTFORD, CONNECTICUT, ASSIGNOR TO JOHN THOMSON PRESS COMPANY, OF NEW YORK, N. Y.,

NEw JERSEY.

A CORPORATION OF BELT-SHIFTER FOR EM BOSSlNG-PRESSES.

SPECIFICATION' forming part of Letters Patent No. 689,382, dated December 24, 1901.

Application filed Maron 14, 1901. Serial No. 51,198. (No model.)

T all whom, 2315 1mi/y concern:

Be it known that I, MORTIMEE L. BRISTOL, a citizen of the United States, residing at West Hartford,Hartford county, State of Connecticut, have invented certain new and useful Improvements in Belt-Shifters for Embossing-Presses, of which the following is a specification.

Myinvention relates to belt-Shifters for emlo bossing-presses; and it consists in the combination, with the fly-Wheel and belt-shifter of a press, of a treadle, a brake-shoe, and connections between the treadle and the beltshifter, whereby the brake-shoe may be apx 5 plied to the {1y-wheel as the belt-shifter is operated to throw the belt onto the loose pulley, thereby enabling the operator to use both Ahands in connection with the feeding operations and to arrest the movement of the ap- `2o paratus at any time without shock by a movement of the foot, all as set forth hereinafter and as illustrated in the accompanying drawings, in which- Figure lis a perspective view cfa press pro- 2 5 vided with my improvement, and Fig. 2 a rear elevation of the same. v

In the construction of press shown there is a frame portion or standard A, supporting a bed B, and a vibrating member or platen D, receiv- 3o ing movement through devices not necessary to be herein described from the pinion-shaft E, connected to the main gear-wheel O and provided with a fly-wheel F at one end and fast and loose pulleys G H at the opposite end,

the belt passing through the fork a of a beltshifter I, the fork being connected with a rod b, sliding in bearings on the frame or standard and provided with a handle c, by means of which the operator can manually shift the 4o belt in either direction at any time.

In many instances it is extremely desirable that the operator should be enabled to employ both hands in manipulating the sheets being fed to or taken from the press at the time the press is stopped, and it is also desirable to arrest the movement very suddenly to avoid accidental damage and preferably without shock. To secure these results, I make use of a brake device which applies a brake to 5o the fly-wheel at the'moment the belt is shifted onto the loose pulley, these parts being moved by the foot of'the operator and preferably being so constructed that the operator can apply his weight to bring the brake with any desired force and suddenness vupon the periphery of the fly-wheel. Different constructions may be employed in carrying out this operation; but, as shown, a lever or treadle .l is pivotally mounted upon the side of the frame, as at e, a cross-bar f, upon which the 6o foot may be placed, and an arm carrying a brake-shoe g, arranged opposite the periphery of the fly-wheel F. LTo the inner end of said arm is connected a rod 7L, the upper end of which is pivoted to a bell-crank lever K, one arm i of which may be brought in contact with an adjustable sleeve m upon the rod b of the belt-shifter.

When the press is running, the weight of the parts preponderates on the side of the 7o shaft e to which the brake-shoe is connected, so that the frame J is tilted in a manner to raise the cross-bar f and carry the brakeshoe downward and the lever K away from the rod b. In this position the belt-shifter is manually carried to the right, causing the belt to operate upon the fast pulley, the arm t' being out of contact with the sleeve m, so that the belt-shifter may be freely operated either to the right hand or the left by manipu- 8o lating the handle c.

When the operator desires to arrest the movement of the press without using his hand, he places his foot upon the bar f and depresses the outer end of the frame J, thereby bringing the arm 'i against the sleeve m, shifting the belt onto the loose pulley, bringing the shoe g as it approaches this position against the periphery of the ily-Wheel F, thus not only taking the power away from the 9o press, but simultaneously applying such a brake-pressure to the iiy-wheel as will result in the speedy arrest of its movement.

It will of course be understood that the press is started by hand, the operator seiz- 95 ing the handle c to shift the belt-shifter to bring the belt onto the fast pulley, thus controllably startin g up the heavy fly-wheell and other moving parts of the press.

While the brake is shown as carried by the roo treadle, any other suitable means may be employed whereby the movements Of the treadle are the means of applying Or taking Oft the brake. y

It will be evident that the treadle, lever, and brake and connections may be dilferently arranged from those shown without departing from the main features of my invention; also, that two y-wheels may be employed, one on either side of the press, each having its individual brake.

Without limiting myself to the precise construction and arrangement of parts shown, I claim as my invention- 1. The combination with a press having a pinion-shaft with fast and loose pulleys and a lywheel, of a slidablysupported beltshifter, a treadle, a brake-shoe actuated by the treadle in position to be applied to the iiy-Wheel, and mechanism connected to the treadle and operated thereby to engage the and a connection between the treadle and the bell-crank lever to aetuate the latter when the brake is applied by the treadle, Substantially as set forth.

In testimony whereof I have signed my name to this speeication in the presence of two subscribing witnesses.

MORTIMER L'. BRISTOL.

Witnesses:

JOHN THOMSON, 'L. C. GROVER. 

